package javacommon.util;

import javax.servlet.http.HttpServletRequest;

public class GroupUtil {
	
	public static String getIp(HttpServletRequest request){
		   String ip = request.getHeader("x-forwarded-for");
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {      
	           ip = request.getHeader("Proxy-Client-IP");      
	       }      
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {      
	           ip = request.getHeader("WL-Proxy-Client-IP");      
	       }      
	       if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {      
	           ip = request.getRemoteAddr();      
	       }
	       if(ip.indexOf(",")!=-1){
	    	   ip = ip.substring(0,ip.indexOf(","));
	       }
	       return ip;
	}
}
